&引用；指定的子项已具有父项。必须对子项'；调用removeView（）；“父母优先”；android中的例外

我正在从服务器检索信息，并试图以表格格式显示它，因此使用json对象

代码：

  JSONArray jsonArray = new JSONArray(jsonResult);
                TableLayout tv=(TableLayout) findViewById(R.id.table);
                tv.removeAllViewsInLayout();

                int flag=1;
                for (int i = 0; i < jsonArray.length() ; i++) {
                    //JSONObject object1 = jsonArray.getJSONObject(i);

                        TableRow tr=new TableRow(viewtimetable.this);

                        tr.setLayoutParams(new LayoutParams(
                                   LayoutParams.FILL_PARENT,
                                   LayoutParams.WRAP_CONTENT));

                        if(flag==1)
                        {

                            TextView col1=new TextView(viewtimetable.this);
                             col1.setText("Day");
                             col1.setTextColor(Color.BLUE);
                             col1.setTextSize(15);
                             tr.addView(col1);


                            TextView col2=new TextView(viewtimetable.this);
                             col2.setPadding(10, 0, 0, 0);
                             col2.setTextSize(15);
                             col2.setText("7:30-9:10AM");
                             col2.setTextColor(Color.BLUE);
                             tr.addView(col2);

                            TextView col3=new TextView(viewtimetable.this);
                             col3.setPadding(10, 0, 0, 0);
                             col3.setText("9:20-11:00AM");
                             col3.setTextColor(Color.BLUE);
                             col3.setTextSize(15);
                             tr.addView(col3);

                            TextView col4=new TextView(viewtimetable.this);
                             col4.setPadding(10, 0, 0, 0);
                             col4.setText("11:10-12:50PM");
                             col4.setTextColor(Color.BLUE);
                             col4.setTextSize(15);
                             tr.addView(col4);

                            TextView col5=new TextView(viewtimetable.this);
                             col5.setPadding(10, 0, 0, 0);
                             col5.setText("1:40-3:20PM");
                             col5.setTextColor(Color.BLUE);
                             col5.setTextSize(15);
                             tr.addView(col5);

                            TextView col6=new TextView(viewtimetable.this);
                             col6.setPadding(10, 0, 0, 0);
                             col6.setText("3:30-5:00PM");
                             col6.setTextColor(Color.BLUE);
                             col6.setTextSize(15);
                             tr.addView(col6);

                             tv.addView(tr);

                             final View vline = new View(viewtimetable.this);

                             vline.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, 2));
                             vline.setBackgroundColor(Color.BLUE);



                        tv.addView(vline);
                        flag=0;


                        }

                        else
                        {

                       try{

                            JSONObject json_data = jsonArray.getJSONObject(i);

                            //Log.i("log_tag","id: "+json_data.getInt("f1")+
                             //         ", Username: "+json_data.getString("f2")+
                               //       ", No: "+json_data.getInt("f3"));


                            //((ViewGroup)tr.getParent()).removeView(tr);

                    TextView b=new TextView(viewtimetable.this);
                        String stime=json_data.getString("day");
                        b.setText(stime);
                        b.setTextColor(Color.RED);
                        b.setTextSize(15);
                        tr.addView(b);


                       TextView b1=new TextView(viewtimetable.this);
                        b1.setPadding(10, 0, 0, 0);
                        b1.setTextSize(15);
                        if(json_data.getString("slot").equals("7:30-9:10AM")){
                        String stime1=json_data.getString("subject");
                         b1.setText(stime1);
                        }
                        b1.setTextColor(Color.WHITE);
                        tr.addView(b1);

                      TextView b2=new TextView(viewtimetable.this);
                     b2.setPadding(10, 0, 0, 0);

                        if(json_data.getString("slot").equals("9:20-11:00AM")){
                            String stime2=json_data.getString("subject");
                             b2.setText(stime2);
                            }
                        b2.setTextColor(Color.RED);
                        b2.setTextSize(15);
                        tr.addView(b2);

                        TextView b3=new TextView(viewtimetable.this);
                        b3.setPadding(10, 0, 0, 0);

                           if(json_data.getString("slot").equals("11:10-12:50PM")){
                               String stime3=json_data.getString("subject");
                                b3.setText(stime3);
                               }
                           b3.setTextColor(Color.RED);
                           b3.setTextSize(15);
                           tr.addView(b2);  

                           TextView b4=new TextView(viewtimetable.this);
                           b4.setPadding(10, 0, 0, 0);

                              if(json_data.getString("slot").equals("1:40-3:20PM")){
                                  String stime4=json_data.getString("subject");
                                   b4.setText(stime4);
                                  }
                              b4.setTextColor(Color.RED);
                              b4.setTextSize(15);
                              tr.addView(b2);     

                              TextView b5=new TextView(viewtimetable.this);
                              b5.setPadding(10, 0, 0, 0);

                                 if(json_data.getString("slot").equals("3:30-5:00PM")){
                                     String stime5=json_data.getString("subject");
                                      b5.setText(stime5);
                                     }
                                 b5.setTextColor(Color.RED);
                                 b5.setTextSize(15);
                                 tr.addView(b2);        

                          tv.addView(tr);


                       }catch(JSONException e){
                           content.setText("jsonexception");
                       }
                final View vline1 = new View(viewtimetable.this);
              vline1.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, 1));
              vline1.setBackgroundColor(Color.WHITE);
              tv.addView(vline1);       


                        }

---

但在我的情况下，在哪里，如何以及为什么使用这个

在文本视图b3、b4和b5的代码中，您正在尝试执行

tr.addView（b2）因此b2总共增加了4次。这应该是b3、b4和b5

另一方面，尝试学习如何读取崩溃日志。异常应该准确地说明错误发生在哪一行代码上，因此可能是在第二次出现
tr.addView（b2）时
谢谢你发现了我愚蠢的错误。也谢谢你的建议。
((ViewGroup)scrollChildLayout.getParent()).removeView(scrollChildLayout);